DOI: 10.1111/ele.13436
论文题名: The new kid on the block: immigrant males win big whereas females pay fitness cost after dispersal
作者: Martinig A.R. ; McAdam A.G. ; Dantzer B. ; Lane J.E. ; Coltman D.W. ; Boutin S.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2020
卷: 23, 期: 3 起始页码: 430
结束页码: 438
语种: 英语
中文关键词: Competition
; cooperation
; dispersal
; fitness
; inbreeding
; kin selection
; local resource enhancement
; philopatry
; sex-biased dispersal
; Tamiasciurus hudsonicus
英文关键词: Tamiasciurus hudsonicus
; breeding
; Canada
; female
; human
; male
; migrant
; reproduction
; Breeding
; Canada
; Emigrants and Immigrants
; Female
; Humans
; Male
; Reproduction
英文摘要: Dispersal is nearly universal; yet, which sex tends to disperse more and their success thereafter depends on the fitness consequences of dispersal. We asked if lifetime fitness differed between residents and immigrants (successful between-population dispersers) and their offspring using 29 years of monitoring from North American red squirrels (Tamiasciurus hudsonicus) in Canada. Compared to residents, immigrant females had 23% lower lifetime breeding success (LBS), while immigrant males had 29% higher LBS. Male immigration and female residency were favoured. Offspring born to immigrants had 15–43% lower LBS than offspring born to residents. We conclude that immigration benefitted males, but not females, which appeared to be making the best of a bad lot. Our results are in line with male-biased dispersal being driven by local mate competition and local resource enhancement, while the intergenerational cost to immigration is a new complication in explaining the drivers of sex-biased dispersal. © 2019 John Wiley & Sons Ltd/CNRS Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166665
Appears in Collections: 气候变化与战略
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作者单位: Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada; Department of Integrative Biology, University of Guelph, Guelph, ON, Canada; Department of Psychology, University of Michigan, Ann Arbor, MI, United States; Department of Ecology & Evolutionary Biology, University of Michigan, Ann Arbor, MI, United States; Department of Biology, University of Saskatchewan, Saskatoon, SK, Canada
Recommended Citation:
Martinig A.R.,McAdam A.G.,Dantzer B.,et al. The new kid on the block: immigrant males win big whereas females pay fitness cost after dispersal[J]. Ecology Letters,2020-01-01,23(3)